On 28 Jun 2018, at 15:35, dur...@mgtsciences.com wrote:
I have a LAN behind a firewall with port 25 forwarded to machine
running
postfix. That machine sends email on to
a Domino server. However, I am using a VM for testing and I cannot
change
the forwarded port. So I am doing it
all from the postfix machine. I use the command below to send an
email to
an unknown user (from command line).
But it delivers it to Domino anyway. I have only one user defined in
/etc/postfix/aliases file. Do I have the right
configuration to reject unknown users?
No.
If not, what am I missing?
smtpd_recipient_restrictions and/or smtpd_relay_restrictions.
See the postconf(5) man page, the SMTPD_ACCESS_README file, and the
ADDRESS_VERIFICATION_README file for the mechanisms available for
determining whether a specific recipient address in a relay domain is
valid. For your circumstance you probably need to use recipient
verification but if Domino provides an LDAP interface that could also be
an option.
